Error: “USB Device not recognized” when you try to access a USB external hard drive.

When you try to access data on an external USB hard drive, you may receive the following error:

"USB Device not recognized: One of the devices attached to this computer has malfunctioned and windows does not recognize it."


Cause

This issue can be caused if any of the following situations exist:

  • The currently loaded USB driver has become unstable or corrupt

  • Your PC requires an update for issues that may conflict with a USB external hard drive and Windows

  • Windows may be missing other important updates hardware or software issues

  • Your USB controllers may have become unstable or corrupt

  • Your external drive may be entering selective suspend

  • Your PC motherboard may need updated drivers

More Information

For more information about Windows Update, visit Windows Update.

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